When building a contraption in mc 1.16.5 using create v0.3e the stress percentage is calculated incorrectly with high stress capacity. I created a windmill providing 2048 stress capacity, but according to stressometer when using 200 su out of 2048 su Im using 90%, wich is obviously wrong. Adding 128 su brings me to 94% and trying to add another 128 su after that stops everything from working due to being overstressed. Interestingly I can use 256 su from a 256 su water wheel without a problem and even using 2 water wheels to get 512 su and then using all 512 su works without overstressing.

Here is a screenshot:

There is no usage of 200 su, but 200 su left. You are reading the information wrong.